Mold.



W. SUDBKUM.

MOLD.

APPLICATION FILED APB. 17, 1912.

Patented Dec. 3, 15H2.

3 BIEBTSf-SHBBT 1.

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gmc/Mo@ W. SUDEKUM.

MOLD.

APPLICATION Hmm 1211.11, 1912.

Patented Dee.3,1912.

3 SHEETS-SHEET 3.

W. SUDEKUM.

MOLD.

APPLICATION FILED APBJ?, 1912.

Patented Dec. 3, 1912.

3 SHEETS-SHBET 3.

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NITED *SA'IT AijENT OFFICE. n

sunninm.

or NASHVILLE, mirNnssnn-Assicnon or cnn-mr fro accusa: ssamm, oF NASHVILLE, msnm mom.

' a citizen ofthe United States, residing at in the county of Davidson and have invented certain of Nashville, State of Tennessee, new and useful Improvements in Molds, which the following is a specification.

My invention relates to molds for casting metallic packing rings of any cross sectional area and if desired, providing said metallic rings with lubricating material embedded therein. y

The object of my invention is to provide a mold which will be compact in form, cheap of construction and easilyv operated with the least amount of manual labor, thereby enabling me to produce packing rings of a and any one of the several uniform quality and at the lowest cost of production.

Furthermore, my objects are to construct a mold which has the least number of parts parts of which can be easily replaced without necessarily reconstructing or remaking any of the other parts'.

Another object of my invention is to make the parts as light as possible so as to enable the same to be operated by one person and without danger of being injured from the hot metal during the pouring operation of the mold. Y

The'invention consists of structural features and relative arrangements of the various elements which will be hereinafter more fully described and particularly pointed out in the appended claims.

In the drawings: Figure 1 is an end view of a mold for making one of the sectionsof a packing ring; Fig. 2 is a top plan view of the mold shown in perspective view of the core removed from the mold shown in Figs. 1 and 2; Fig. 4 is a top plan view of the mold for making the section of a packing ring having lubricating material embedded therein; Fig. 5 is a similar view of the same mold shown in Fig. 4, with the combined core holder and sprue cutter disengaged from the core; Fig.

. 6'is an end viewl of the mold shown in Fig.

4; Fig. 7 is a partial longitudinal section of the mold after the metal has been poured;

8 is a sectional view of the mold shown iii Figs. 4 and 7 after the cutter has been moved to sever the embedded lubricatin sticks; Fig. 9 is a perspective detail view o Fig.

Specication of Letters Patent. *Y ,Application med April'l', 1912. Serial N0. 691,349.

Fig. 1; Fig. 3 is athrou g Patented nee. e, i912.

the side plates used to connect the cutter with the core; and Fig. 10 is a combined elevation and sectional view of the packing ring sections'surrounding a piston rod.

Referring to the drawings in which similar reference characters indicate the same parts in the several views, 1 represents a base having its upper surface cut out in the form of a semi-circular groove 2. The uppers surface of groove 2 is provided'.

with a 'recess 3 which may be of anycross sectional area corresponding to the cross section of the packing rin and I wish it to be distinctly understoo that Ido not limit myselfl to the form of recesses shown in the several figures of drawing.

VReferring to the form shown in F igs.l 1, 2 and 3, the base 1 is provided on one end withia handle 4 and on the other end with an extension 5 against which the mold may be struck to remove the packin ring section after the mold has' been poure v6 is a core of the same contour as the semi-circular groove 2, said core being provided with a handle 7. The core rests in the groove 2 and is held in a locked position by means of a sprue cutter 8 pivoted on each side by) pivot screws 9. The sprue cutters are provided with pour openings 10.

The above description refers to a mold in its simplest form and is for the purpose of making the sections 'of a packing ring a shown in Fig. 10.

In using the mold shown in Figs. 1-3, the core 6 is placed in the semi-circular groove 2 of the base l, after the cutters 8 have been turned outwardly. After placing the core properly in the base 1 the cuttersv 8 are turned into position, as shown -in Fig. 2, and as will be seen, will firmly hold the sections of the mold, that is, the base 1 andl core 6, together. The molten metal ,of any suitable composition for making packing rings is poured into the semi-annular chamber formed by the recess 3 in the base 1 and the core 6, through one of the openings 10.' As the metal passes down throng openi'n 10 the displaced air passes out the opening 10 in the opposite cut-- ter 8 'and in this way no air is confined in the mold, and a perfectly solid and ho-mogeneous packing ring is cast. After the metal has been suiilciently cooled the combined holders and cutters 8 are turned on their pivot pins or screws 9. The openings h one of the expedients are provided for holdin arev provided with cutting edges 11 and as the cutters8 are swung around on thelr `'pivots .9 the cast metal which is projectin above theupper surface of the base 1 a.

out of `the recess 3 is sheared ofi'. When tli'e .cutters Slturned 1n this last position,

the 'core -6 can 'b'" easily removed by the handle 7 from the base 1 by one hand and the other hand can grasp the handle 4 and thus reverse the base 1 and strike the mold on the projection 5 and thereby. quickly remove the cast packing held in the recess 3.

Referring to Figs. 4-7, the above l described mold shown in' Figs. 1-3 is the same 'in the broad'essentials, and different in that sticks of lubricating material in such relatlon that they may be cast integral with the metal forming the sections of the packing ring. As shown in Figs. 4-7 the ore 6 is preferably provided with side plates 12 (see Fig. 9) which have slots 13 and are -secured to the sides of the core by means of bolts 14.

Movably supported on the under side of the core 6 by the side plates 12is a cutter 15 which is provided With a series of .countersunk openings 17 which correspond to openings 16 in the core 6 to receive the lubricating sticks 18 to be presently described. The.

cutter 15 is also provided on its side with pins 15 which project through the slots 13 as heretofore explained. The lubricating sticks 18 are thenfpassed through theopenings lxof .the core 6, thence throughthe registering countersunk openings 17 of t-he cutter 15 until they touch the bottom of the semi-annular recess in the base 1, as shown in Fig. 7. The metal is then poured in the opening 10 of one of the cutters 8 when the parts are in` adjusted position, as shown in Fig. 4. The molten metal passes into the recess 3 and surrounds and .firmly takes hold of the sections of the lubricating sticks 18 which are projecting into the recess 3 of the base 1', and the metal gradually rises and displaces the air up to the opening 10 in the opposite cutter 8 of the mold and Will assume the position 'as shown in Fig. 7. After the poured metal has been suiviciently cooled the cutters 8 are turned on their pivots until the superfluous metal projecting out of the recess 3 has been sheared off from the packing section in the mold by the cutting edgesv 11. The cutter- 15 is then slightly moved by tapping on the pins 15 to move the cutter either to the right or left when the same Will shear or disconnect the lubricatingv sticks from the poured packing ters 8 are swun lsection loosely .poured metal comprislng the packing section, as indicated in Fig. 8. After the cutso as to be entirely free of the core with its cutter 15, and the outer edges of the metal packing which has been cast, the core with its cutter 15 is removed by the handle 7 "and the mold is reversed 7 and tapped on its extended end 5, andthe finished metal packing knocked out in a manner similar to that described with reference to Figs. 1-3. The packing section b provided with lubricating plugs embedded therein is shown in its operative relation in Fig. 10.

vFrom the foregoing disclosure it will beseen that by my improved mold I am able to cast with the least effort either the outer v or inner rings of ametallic packing and if vdesired provide any of the sections With changes .will readily suggest themselves to those skilled'in the art without departing from the spirit of my invention, and I wish it to be distinctly understood that I do not limit myself to the exact structural characteristics andr relative arrangements herein described.

WVhat I claim is v 1. A mold for casting packing rings which comprises a base having a semi-circular groove in itsu'pper. side and a recess at right anglesl to the axis of the groove, a core supported in said groove and over the recess 'of the base, vand a sprue cutter on each side and over the ends of the recess for locking the core to the-base.

2. A mold for casting ypacking rings which comprises a base having a semi-circular groove in its, upper side and a recess at right angles to the axis of the groove, a core supported in said groove and over the recess of the base, a sprue cutter having an opening at each end of the recess in the base and ladapted to lock the core in the groove of the ase. I3. A Ymold for casting packing rings which comprises a base having a semi-circular groove inits upper side and a recess at right angles to the axis of the groove, a

core supported in said groove and over the right angles to the axis of the groove, a core supported in said groove and over the recess of the base, a sprue cutter having an opening pivoted at-each end of the recess in the base and adapted to lock the core in the groove of the base.

5. A mold for casting vpacking rings which comprises a base having a semi-circular groove invits upper side and a recess at right angles to the axis of the groove, a core supported in said groove and over the recess, a movablelcutter interposed between the core and the base` said core and cutter having registering openings adapted to receive st-icks of Lubricating material and permit the ends of the sticks to projectinto the recess of the base.

6. A mold for casting `packing rings which comprises a base having a semi-circuy lar groove in its upper side and a recess at right angles to the axis of the groove, a core supported in said groove and over the l recess, a movablecutter interposed between the core and the base, said core and cutter having registering openings adapted to receivesticks of lubricating material and permit the ends ofthe sticks to project into the recess of the base, ,and sprue cutters over the 'ends of the recess adapted to lock the core in the groove and to the base.

7. A mold for casting packing ^rings which comprises a base having a semi-circular groove in its upper sideand a recess at right angles to the axis of the groove, a core supported in said groove and over the recess, a cutter movably supported on the underside of the core, said core and cutter having registering openings adapted to receive sticks of lubricating materiali and permit the ends of the sticks to project into the recess of the base.

8. A mold for casting packing rings which comprises a base having a semi-circu-4 lar groove in its upper side and a recess at right angles to the axis of the groove, a core supported in said groove and over the recess, a cutter movably supported on the underside of the core, said core and cutter having registering openings adapted to receive sticks of lubricating material and permit the ends of the sticks to project into the recess of the base, and means for moving the relative position of said cutter with respect to the core and base.

9. A mold for casting packing rings which comprises a base having a semi-circul lar groove in its upper side and a recess at right angles to the axis of the groove, a.

core supported in said groove and over the recess, a. cutter movably supported onthe underside of the core, said core and cutter having registering openings adapted t receive sticks of lubricating material and permit the ends of the sticks to project into the recess of the base, and sprue cutters over the ends of the recess adapted to lockthe. core and cutter in the groove and to the base.

A 10. A mold for casting packing rings which comprises a base having a semi-circular groove in its upper side and a recess whose axis is substantially at right. angles to the axis of the groove, a core supported in said groove and over the recess of the base, whereby -a mold cavity is formed having both ends connecting with the atmosphere, and means containing combined pour openings and sprue cutters for holding said core to the base.

In testimony whereof I aiiix my signa,- ture in presence of two witnesses.

WILLIAM SUDEKUM. 

